<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <!--    引入各类样式-->
    <link href="layui/css/layui.css" rel="stylesheet">
    <style>
        .tree-img{
            width: 18px;
            height: 18px;
            margin-right: 5px;
            position: relative;
        }
    </style>
</head>
<body>

<div id="layer_list" name="layer_list" class="demo-tree"></div>

<!--引入各类函数-->
<script src="layui/layui.js"></script>
<script src="js/other_layers.js"></script>
</body>
</html>